4-chloro-5-methoxy-6-methyl-pyrimidine CAS 1739-60-2
| CAS No. | 1739-60-2 |
| Molecular Formula | C6H7ClN2O |
| Molecular Weight | 158.59 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C6H7ClN2O, 4-chloro-5-methoxy-6-methyl-pyrimidine contains an amide group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 158.59 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
4-chloro-5-methoxy-6-methyl-pyrimidine (CAS 1739-60-2) is a high-purity analytical reference standard with the molecular formula C6H7ClN2O and a molecular weight of 158.59 g/mol.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C6H7ClN2O |
| Molecular Weight | 158.59 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related chloro Standards
- 1-(4-Chloro-1-methyl-1H-pyrazol-3-yl)ethan-1-one (CAS 1004194-08-4)
- 6-Chloro-N4-methylpyrimidine-2,4-diamine (CAS 1005-37-4)
- 4-Chloro-1-ethyl-1H-pyrazole-3-carbaldehyde (CAS 1005583-83-4)
- 4-chloro-1-ethyl-1h-pyraZole-5-carboxaldehyde (CAS 1005609-70-0)
- 1-(4-Chloro-1-methyl-1h-pyrazol-5-yl)ethan-1-one (CAS 1006482-78-5)
- 2-Chloro-5-hydrazinyl-phenol (CAS 1026536-72-0)
- 4-Chloro-2-(methoxymethyl)pyrimidine (CAS 105950-89-8)
- 3-Chloro-5,6,7,8-tetrahydro-[1,2,4]triazolo[4,3-a]pyrazine (CAS 1060814-43-8)
Recommended Standards
- 3-Chloro-4-ethoxypyridazine (CAS 1677-82-3)
- 3-(Chloromethyl)-6-methylpyridazin-4(1H)-one (CAS 17417-54-8)
- (2-Amino-5-chloropyridin-4-yl)methanol (CAS 1598357-54-0)
- 2-Chloro-4-(methylamino)-5-aminopyrimidine (CAS 17587-95-0)
- (2-bromo-1-methylcyclopropyl)methanol (CAS 343267-94-7)
- [2-(4-Fluorobenzoyl)-4-methyl-3-oxo-1-phenylpyrazolidin-4-yl]methyl acetate (CAS 329702-39-8)
- 2-Chloro-N-(2,6-dichlorobenzyl)acetamide (CAS 647824-42-8)
- methyl 1-butyl-1H-pyrazole-3-carboxylate (CAS 60056-63-5)
- Advantame Acid(Secondary Standards traceble to USP) (CAS 713524-95-9)
- 2-(3,5-Difluorophenyl)pyrrolidine hydrochloride (CAS 1197236-08-0)
- n-Benzyl-2-(methylamino)acetamide (CAS 74963-37-4)
- tert-Butyl(3-iodophenoxy)dimethylsilane (CAS 133910-12-0)
- 4-{[({4-[(pyrrolidin-1-yl)methyl]phenyl}methyl)amino]methyl}benzonitrile dihydrochloride (CAS 1384724-10-0)
- Semaglutide Impurity 147 (CAS CATO-C4X-2226147)
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